Outside air conditioner

Abstract

While water sprayed from an air washer is consumed by humidification, excess water which is not consumed accumulates in a circulating water tank and is supplied to the air washer again through a heat exchanger by a circulating pump. Water is supplied to the heat exchanger through a piping to make up for a shortage of water, where the water is cooled and fed to the air washer. Accordingly, the water supplied to the air washer is composed of excess humidification water from the circulating water tank which is circulated by the circulating pump and water supplied through the piping, and the water from two sources is supplied to the air washer after being cooled by the heat exchanger. Thus the excess humidification water stored in the circulating water tank has a temperature lower than the room temperature and can prevent propagation of micro-organisms which can propagate at a room temperature.

What is claimed is: 
     
       1. An outside air conditioner wherein water is sprayed from an air washer into outside air taken in by the outside air conditioner to clean and humidify the outside air, the temperatures and humidity of the outside air are adjusted, and thereafter the outside air is discharged to the outside, comprising: a circulating water tank that receives excess humidifying water sprayed from said air washer;   a circulating pump that circulates the water received in said circulating water tank back to said air washer, and   a heat exchanger that cools the water from said circulating water tank to a temperature lower than the ambient temperature.   
     
     
       2. The outside air conditioner as claimed in claim 1, wherein water for making up for a shortage of water to be sprayed from said air washer is supplied to said heat exchanger through a piping. 
     
     
       3. The outside air conditioner as claimed in claim 2, wherein the temperature of water to be sprayed from said air washer is set to 10° C. 
     
     
       4. The outside air conditioner as claimed in claim 1, wherein the temperature of water to be sprayed from said air washer is set to 10° C. 
     
     
       5. An outside air conditioner wherein water is sprayed from an air washer into outside air taken in to clean and humidify the outside air, the temperatures and humidity of the outside air are adjusted, and thereafter the outside air is taken out to the outside, comprising: means for supplying water of a temperature lower than the ambient temperature to said air washer, wherein the temperature of water to be sprayed from said air washer is set to 10° C.   
     
     
       6. An outside air conditioner, comprising: an outside air intake opening for taking in outside air;   a mean temperature gauge for measuring a mean temperature of the outside air taken in through said outside air intake opening;   a heating means for heating the outside air taken in through said fresh air intake opening to a temperature equal to or higher than a predetermined temperature based on the temperature of said mean temperature gauge;   an air washer for spraying water to the outside air heated by said heating means to clean and humidify the outside air;   a circulating water tank for receiving excess humidifying water sprayed from said air washer;   a circulating pump for circulating the water received in said circulating water tank to said air washer;   a piping for supplying water to make up for a shortage of water to be sprayed from said air washer;   a heat exchanger for cooling the water from said circulating water tank and the water from said piping and supplying the cooled water to said air washer;   an adjusting means for adjusting the temperature and humidity of the outside air humidified and cleaned by said air washer; and   a fan for discharging the outside air, whose temperature and humidity have been adjusted by said adjusting means, to the outside of said outside air conditioner.   
     
     
       7. The outside air conditioner as claimed in claim 6, wherein said heat exchanger cools the water to be supplied to said air washer to a temperature of 10° C.